Home / 987,018.40-1,362,165.84-557,403.04

Finding the Fourth Proportional to 987,018.40, 1,362,165.84 and 557,403.04

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Solution

The fourth proportional to 987,018.40, 1,362,165.84 and 557,403.04 is: 769,261.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,018.40 : 1,362,165.84 = 557,403.04 : x
  2. Step 2: Convert to fraction form
    987,018.40/1,362,165.84 = 557,403.04/x
  3. Step 3: Cross multiply
    987,018.40x = 1,362,165.84 × 557,403.04
  4. Step 4: Simplify right side
    987,018.40x = 759,275,380,200.15
  5. Step 5: Solve for x
    x = 759,275,380,200.15/987,018.40
  6. Step 6: Final answer
    x = 769,261.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.